Outdoor pop-up shelter



FIG. 1 is a first side elevation view of an outdoor pop-up shelter showing the new design;

FIG. 2 is a second side elevation view thereof;

FIG. 3 is a third side elevation view thereof;

FIG. 4 is a fourth side elevation view thereof; and,

FIG. 5 is a top view thereof.

The broken lines are for the purpose of illustrating portions of the article that form no part of the claimed design.

The stippled areas illustrate portions of the article that comprise a mesh material. 

CLAIM The ornamental design for an outdoor pop-up shelter, as shown and described. 